Airtac JSI Series Standard Cylinder JSI40X50FA
The AirTAC Airtac JSI Series Standard Cylinder JSI40X50FA is a genuine double acting JIS-standard air cylinder with a Ø40mm bore and 50mm stroke, G1/4 air ports and adjustable end cushioning. Its no-tie-rod, hard-anodized profile barrel is more compact than an ISO 15552 cylinder of the same bore — a space-saver on tight machines.
- BoreØ40 mm
- Stroke50 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM14×1.5
- CushionAdjustable, 20.5 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac JSI Series Standard Cylinder JSI40X50FA
Delivering 628 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder saves valuable machine space by being noticeably shorter than a same-bore ISO 15552 unit. The extruded hard-anodized aluminum barrel omits external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life. Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position switches.
Plan for about 377 N of real work at 0.5 MPa, which translates to lifting roughly 32 kg vertically with a 2:1 safety margin. Air connects via a G1/4 port, and the FA front-flange mount provides a rigid fixed-body interface for straightforward plate mounting.
Airtac JSI Series Standard Cylinder JSI40X50FA Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI40X50FA |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 20.5 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC JSI (JIS standard) datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G. Barrel: hard-anodized aluminum profile (no tie rods).
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSI Series Standard Cylinder JSI40X50FA
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensors. |
JSI-family variants: JSI (double acting), JSID (double rod), JSIJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / TCM1 / TCM2. Thread PT (blank) / G.
Where the Airtac JSI Series Standard Cylinder JSI40X50FA Is Used
Package Diverting Gate
Actuates a lightweight routing flap on a packaging conveyor, using the 50 mm stroke to push cartons onto a secondary belt with precise timing.
Small Part Ejection
Ejects molded plastic components from a press bed, utilizing the 628 N push force to reliably knock parts clear of the mold cavity.
Bin Lid Actuation
Opens and closes hinged lids on automated sorting bins, where the FA flange mount secures the body firmly to the machine subframe.
Is the Airtac JSI Series Standard Cylinder JSI40X50FA the Right Cylinder?
When sizing, verify if the 32 mm bore (402 N push @0.5 MPa) is sufficient, or step up to the 50 mm bore (982 N push @0.5 MPa) if your 40 mm choice underperforms. The 50 mm stroke keeps the rod short for excellent rigidity. Since this SKU has no -S magnet, you must select a magnet-equipped variant if you require CMSE or DMSE sensor feedback.
Remember that a standard cylinder will drift and cannot hold a load if air pressure drops or the valve is centered; the adjustable air cushions only decelerate the piston near stroke ends. For suspended or vertical loads that must remain fixed during a pressure loss, install an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac JSI Series Standard Cylinder JSI40X50FA FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it provides 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. The air port size is G1/4.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 40 mm bore. Additionally, because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE magnetic switches; you must purchase the -S variant for position sensing.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC JSI Cylinders
Request a Quote for Airtac JSI Series Standard Cylinder JSI40X50FA
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.